Powerful Security Alarm Siren Circuit | DIY Loud Car & Motorbike Alarm Build

Wanna hear a REAL security siren built from scratch?
In today’s video, I’m building a powerful alarm circuit that hits louder than most cheap car alarms — all using just TIP42, BC547, a few capacitors, and a tiny speaker.

This isn’t just a DIY circuit…
It’s the kind of thing you can actually use on a car, motorbike, garage door, or even your own custom anti-theft project.
Small project — big sound.


🔥 What’s inside?

• Loud sweeping alarm tone
• Powerful TIP42 output stage
• Simple 2-transistor siren oscillator
• Clean wiring + easy parts

🔧 Parts:

TIP42
BC547
220µF
22nF
22k, 47k, 1k resistors
Button
8Ω speaker 5w
3.7V supply


If you like loud builds, real-world electronics, and circuits that actually *do something*, you’re gonna love this.
   / @electromind-1  

And if you liked this video, you can watch similar videos at the link below:
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I am an electronic engineer and a master's degree in telecommunications with years of experience and expertise in the field of designing, building and repairing electronic boards. I am here to share the joy of building very simple and practical circuits with you


============================================
1. DIY siren circuit
2. car alarm system
3. motorbike security alarm
4. TIP42 transistor project
5. BC547 electronics build
6. loud siren generator
7. anti-theft alarm circuit
8. simple DIY electronics
9. vehicle security system
10. homemade alarm siren

#DIY
#AlarmCircuit
#SirenBuild
#ElectroMind
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Email : [email protected]